Geometrical instruments – Straightedge type – Plural straightedges nonadjustably fixed at right angles
Patent
1979-02-22
1980-10-14
Phillips, Charles E.
Geometrical instruments
Straightedge type
Plural straightedges nonadjustably fixed at right angles
33484, B43L 708
Patent
active
042273145
ABSTRACT:
A carpenter square having a tape holding section adapted to receive tape measure housings of varying width. The tape housing engages a curved section and one leg of the square, and can be clamped in position. A slot is provided through which the tape extends for measuring and marking. The square is also provided with a positioning bar slidably mounted on the other leg of the square for non-perpendicular cuts.
REFERENCES:
patent: 357771 (1887-02-01), Janssen et al.
patent: 2571569 (1951-10-01), Greenwood
patent: 2651843 (1953-09-01), Goodford
patent: 3357106 (1967-12-01), Schneider
patent: 3390461 (1968-07-01), Anderson
patent: 3823481 (1974-07-01), Chapin
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